Publications de Sachiko Hirosue

Coupled As and Mn Redox Transformations in an Fe(0) Electrocoagulation System: Competition for Reactive Oxidants and Sorption Sites

Sachiko Hirosue, Victor Carle Adrien Boureau, Jasquelin Peña, Nathalie Manetti

Iron electrocoagulation (EC) can be used for the decentralized treatment of arsenic(As)-contaminated groundwater. Iron EC involves the electrolytic dissolution of an Fe(0) electrode to Fe(II). This process produces reactive oxidants, which oxidize As(III) ...

AMER CHEMICAL SOC2020

Adjuvant-free immunization with infective filarial larvae as lymphatic homing antigen carriers

Melody Swartz, Marcela Rincón-Restrepo, Sachiko Hirosue, Witold Waldemar Kilarski, Alexandre de Titta, Esra Güç, David Scott Wilson

Controlled infection with intestinal nematodes has therapeutic potential for preventing the symptoms of allergic and autoimmune diseases. Here, we engineered larvae of the filarial nematode Litomosoides sigmodontis as a vaccine strategy to induce adaptive ...

Nature Research2020

Antigens reversibly conjugated to a polymeric glyco-adjuvant induce protective humoral and cellular immunity

Jeffrey Alan Hubbell, Xavier Fredy René Quaglia-Thermes, Melody Swartz, Giacomo Olimpio Diaceri, Sachiko Hirosue, Laura Jeanbart, David Scott Wilson, Maria Anna Sofia Broggi, Michal Mateusz Raczy, Ruyi Wang

Fully effective vaccines for complex infections must elicit a diverse repertoire of antibodies (humoral immunity) and CD8+ T-cell responses (cellular immunity). Here, we present a synthetic glyco-adjuvant named p(Man-TLR7), which, when conjugated to antige ...

NATURE PUBLISHING GROUP2019

Synthetically glycosylated antigens induce antigen-specific tolerance and prevent the onset of diabetes

Jeffrey Alan Hubbell, Xavier Fredy René Quaglia-Thermes, Sachiko Hirosue, Giacomo Olimpio Diaceri, David Scott Wilson, Martina Damo, Michal Mateusz Raczy

Homeostatic antigen presentation by hepatic antigen-presenting cells, which results in tolerogenic T-cell education, could be exploited to induce antigen-specific immunological tolerance. Here we show that antigens modified with polymeric forms of either N ...

2019

Toll-like receptor 8 agonist nanoparticles mimic immunomodulating effects of the live BCG vaccine and enhance neonatal innate and adaptive immune responses

Jeffrey Alan Hubbell, Melody Swartz, Sachiko Hirosue, Alexandre de Titta, Daniel Kenneth Bonner

Background: Newborns display distinct immune responses, leaving them vulnerable to infections and impairing immunization. Targeting newborn dendritic cells (DCs), which integrate vaccine signals into adaptive immune responses, might enable development of a ...

2017

Oxidation-sensitive polymersomes as vaccine nanocarriers enhance humoral responses against Lassa virus envelope glycoprotein

Jeffrey Alan Hubbell, Marcela Rincón-Restrepo, Melody Swartz, Sachiko Hirosue, Clara Galan Navarro, Stefan Kunz

Lassa virus (LASV) causes severe hemorrhagic fever with high mortality, yet no vaccine currently exists. Antibodies targeting viral attachment proteins are crucial for protection against many viral infections. However, the envelope glycoprotein (GP) 1 of L ...

Academic Press Inc Elsevier Science2017

Vaccine nanocarriers: Coupling intracellular pathways and cellular biodistribution to control CD4 vs CD8 T cell responses

Jeffrey Alan Hubbell, Marcela Rincón-Restrepo, Melody Swartz, Sachiko Hirosue, Edward Allen Phelps, Sylvie Hauert, Daniel Kenneth Bonner, Aaron Mayer

Nanoparticle delivery systems are known to enhance the immune response to soluble antigens (Ags) and are thus a promising tool for the development of new vaccines. Our laboratory has engineered two different nanoparticulate systems in which Ag is either en ...

Elsevier Sci Ltd2017

Primary human and rat beta cells release the intracellular autoantigens GAD65, IA-2 and proinsulin in exosomes together with cytokine-induced enhancers of immunity

Michele De Palma, Jeffrey Alan Hubbell, Davide Demurtas, Romain Hamelin, Steinunn Baekkeskov Hanahan, Chiara Cianciaruso, Melody Swartz, Sachiko Hirosue, Miriella Carmela Pasquier, Edward Allen Phelps

The target autoantigens in several organ-specific autoimmune diseases, including type 1 diabetes (T1D), are intracellular membrane proteins, whose initial encounter with the immune system is poorly understood. Here we propose a new model for how these prot ...

American Diabetes Association2017

Modes of antigen presentation by lymph node stromal cells and their immunological implications

Sachiko Hirosue

Antigen presentation is no longer the exclusive domain of cells of hematopoietic origin. Recent works have demonstrated that lymph node stromal cell (LNSC) populations, such as fibroblastic reticular cells, lymphatic and blood endothelial cells, not only p ...

Frontiers Media Sa2015

Steady-State Antigen Scavenging, Cross-Presentation, and CD8(+) T Cell Priming: A New Role for Lymphatic Endothelial Cells

Melody Swartz, Marcela Rincón-Restrepo, Efthymia Vokali, Sachiko Hirosue, Amanda Waite Lund, Patricia Corthésy Henrioud, Vidya Raghavan

Until recently, the known roles of lymphatic endothelial cells (LECs) in immune modulation were limited to directing immune cell trafficking and passively transporting peripheral Ags to lymph nodes. Recent studies demonstrated that LECs can directly suppre ...

American Association of Immunologists ; Oxford University Press2014